Manufacture of fireproof partitions.



D. MOWAT. MANUFACTURE 0F FIREPROOP PARTITIONS.

APPLICATION FILED 00T. 1909.

958,41 9. Patented May 17, 1910.

2 SHEETS-SHEET l.

INVENTOR DONALD MOwAT BY .Y

' Has AT Knrx1 D. MOWAT. MANUFAGTUBE 0F FIBEPBOOF PARTITIONS.

A APPLICATION FILED 00T. 6, 1909. 958,41 9, Patented May 17, 1910.

'2 SHEETHHBBT 2.

. 1 t l L' L A LI WITNESSES l INVEHTOR DONALD MowAT MM v v H15 ATTORNEY.

DONALD MOWAT, OF' SAN FRANCISCO, (.'ALIFORNIA..v

MANUFACTURE OF FIREPROOF PARTITIONS.'

Specieation of Letters Patent. Patented May 1'?, 1910.,

Appncationmea october s, 190s, sealara. 521.395.'

To all 'whom t may concern:

Be it known that I, DONALD MowAT, citizen of the United States, residingin. the city and county of vSan Francisco and State of California, haveinvented new anduseful Improvements in the Manufacture of FireproofPartitions, of which the following is a specification. i

This invention relates to the construction o f partition walls infreproof buildings, and pertains particularly to forms for use inmolding partition walls kof plastic materials.

It .is the object ofv this invention to provide means by which partitionwalls can be molded or cast in place, so as to form practically a.monolithic wall of cement or other plastic materials without the use ofstudding, lath or other reinforcements.

A further object is to provide a form for constructing partition wallsthat can be quickly and readily assembled and distributed, and which canbe easily and accurately plumbed and set to a line. These forms are sodesigned andl constructed that they can be set up, the partition wallscast, andthe forms removed without requiring skilled labor, then by theuse of a plast-ie mixture, consisting of hard wall plaster and sand, inapproximately. the proportions of one part plaster to three parts sand,a very cheap and substantial partition wall is produced.

Any desired plastic mixture may be used, such as ordinary concrete,cement andthe like, but the above mentioned preparation is particularlyadvantageous, as it sets quickly and permits of the removal of the`forms within a few hours after casting, thus enablingy very rapidconstruct-ion.

By the use of this invention partition walls canbe Vbuilt truer,smoother and of more even surface than is ordinarilythe case where lat-hand. plaster are used.

The invention Vconsists of the parts and.

the combination and construction. of parts as hereinafter more fullydescribed. and

claimed, having reference tothe accompanying drawings, in which-K Figure1 is aside elevation of the invention. Fi 2 is. an end view. Fig. 3 islahorizonta section on the line X-X, Fig. 1. Fig. 4 is a plan sectionshowing the application of the forms in the construction of long'partitions. Fig. 5 is a similar view showing how a partition wall isconstructed and'c'onnected with a cross wall. Fig; 6 is y1sapproximately in the a detail' in perspective showing -hovvI thepartition is finished at'the ceilingy line. Flg.- 7 is a view of; a searator. Fig. 8' is av detail' in perspective of the adjustabley end.Astud. Fig. 9 is av View of a. slat. Fig.- 10 shows the lychannel used atthe joiningof cross. vvalls.l Fig. 11 is a view of a. gage.

Inthe drawings A represents the.A sidemembers or panels of the .for-ms,and` theseA panels are of suitablesize, shapeand' material. Preferablythey are-of wood: coated:

with. preservative materials, but in. some. instances sheet metal;plates may beemployed. The panels areusu'ally of a length equal to thesection of wall or partition to.be cast, and each panel is provided.- atintervals: on its outside abouta foot apart with4 transverse slats 2,each of which has. a. projecting tongue 3 on one end and is forked atthez of attaching theslatsto the panels Au screws.

8 are employed in the usual manner. Each; Slat 2` isperforated. at 16and has theoppositely extending outwardly offset projections or lugs 1.7on each side of a. hole 16 toform.

a cleat for securing a tie wire 15y bywhich the panels are kept fromIspreading; all; as"

will` be shortly described. The' end panels 9 lof the form areconstructed of' rectangular studs, of a width equal.A the required.

so that when a slat is'secured.v

thickness ofthe partition. A rectangular strip 10 is secured to theinner face of each stud or end panel 9 so as toform. a groove or channel11, Figs. 4-5, in each end of.y a, cast section. Theupper endof eachstud.

9 is fitted with an adjustable clamp consisting of cross arms 12, 12',12a, preferably extends centrally and. rearwardly ofthe stud- 9, and. inthe-plane of the mold or partition, the other two, 12, 12 rojecting atright angles thereto. Vlling bolts 13, 13', 13aare threaded in the outerrends of the respective arms 12, 12', 12a and are sharply pointed threein. number, Fig. 8, one of which, 12,

at their upper ends so as to bite when bearing -against a surface, asthe ceiling or an overhead beam.

The operation is as follows: To construct a monolithic partitionextending between a floor and a ceiling, by means of this invention, aline is first drawn'upon the floor or ceiling, or both, along which thepartition is to be erected. The upright studs 9 are then placed inposition, as shown in Fig. 1, and the rear bolts 13a screwed into theceiling 14 so as to hold the studs. The bolt 13a acts as a pivot aroundwhich the upper end of the stud may swing so as to adjust itperpendicularly and in true alin'ement` whereupon the remaining bolts134-13 are screwed tightly against the ceiling, thus retaining the studin an upright rigid position. The bottom side panels A are then placedon both sides of the ystuds 9, as shown in Fig. 2. A wire 15 is thenpassed through a hole 16 in each of the slats 2 and through the mold tobind the opposed spaced panels A together, as shown in Figs.3, 2, 6; theends of the wire being securely held by winding it around the cleats 17.Separators 18 are placed astride of the wires 15 between the panels A,so as to govern the width of the space between the sides. The separatorsbeing of a length equal to the width of the studs 9 insures thecompleted partition being of equal thickness throughout. The slats onthe lowermost course of side panels are provided with additional holes16 and cleats 17 v so that additional cross tie wires can be used toavert the spreadin of the lower panel bythe weight of the p asticmixtures. After the lowermost course of panels are secured in place, theupper ties are set thereon, with the lower ends 3 of the slats 2engaging the slots 4 of the slats beneath. The sides are tied togetherthrough each slat, as before described, separators 18 being placed overthe wire ties 15 at suitable intervals. The separators 18 areconstructed with a hook 19 to catch over the wires 15, and have endflanges 20 which bear against the insides of the panels A. A set of tiewires 15 are passed through the end slats outside of the studs 9 so thatthe latter will not be pressed outward by the materials in the form. Themold is thus built up to within fifteen or eighteen inches, more orless, of the ceiling when the plastic material of which the partition isto be built is poured in at the top in av suitable manner, as through ahopper 21.

In order to support the cast partition section after the mold isremoved, there are inserted into the top of the mold and into the freshplaster certain braces 22, which have flat projecting heads 23 to bearagainst the ceiling. When plaster sets and the forms are removed thepartition will be rigidly held against any sidewise or tipping move-4ment. In order to take down the mold the wires 15 are cut and afterwardwithdrawn or trimmed even with the walls of the cast partition, or theymay serve as bonds for wall iinishing slabs of marble, etc. spacebetween the top of the partition wall and the ceiling may be illed withblocks 25, or in any other suitable manner. The blocks 25 are providedwith grooves or channels 26 on their outer edges which form a tie whenfilled with cement, thus binding the partition wall to the blocks 25 andceiling 14. Where one of these cast partitions is to be connected to aWall or cross partition, I employ channels 27, preferably constructed ofsheet metal which are secured to out-y side walls or cross partitionsinto which channels the cast partition is molded by tying the panels Aof the form against the outside of the channel, as shown in Fig. 5, theupright stud being dispensed with in this case.

Ordinarily, in the construction of long partitions a number of sectionsare cast on a line and allowed to harden, with spaces or intervalsbetween their ends as shown in Fig. 4. The sides A of the form are thentied across the intervening space, as shown, the studs 9 being omitted.The materials are then poured in the usual manner, and flowing into thegrooves 11 form a substantially monolithic wall.

Door and window frames may be set in position inside the form as shownby dotted lines in'Fig. 1, and the materials poured around them, thusembedding the frames within the wall.

A gage 28, such as shown in Fig. 11, may be employed in conjunction withor in lieu of the separators 18 as a means of governing tllie width ofthe space between the side pane s A.

Having thus described my invention, what I claim and desire to secure byLetters Patent is- 1. A mold for manufacturing partition `structures,said mold comprising a series of side panel members and means forlocking them together to form two side walls of a mold, said lockingmeans including crosswise extending slats, each formed with a tongue atone end and a slot at the other, the said slot being formed between twospaced members, the inner one of which is off-set beyond the innersideof the slat and is adapted to lit a slot formed in the edge of thepanel, bonding wires passed through the opposed panels, and spacinglmembers supported by said bonding wires and havlng.

end portions parallel with and bearing against the inner sides of thepanels.

2. A mold for manufacturing partition structures, said mold comprising aseries of side panel members and means for locking The them together t0form two side walls of a mold, said locking means including crosswiseextendin slats each formed with a tongue, the said slot. being formedbetween two spaced members, the inner one of whlch is of dove-tail formin cross section and is off-set from th) inner side of the slat and isadapted to fit a corresponding slot in the edge of the panel, bondingwires passed through the opposed panels, and spacing members supportedby the bonding wires.

3. A mold for manufacturing partit-ion structure, said mold comprising aseries of side panel members and means for locking them together to formtwo side walls of a mold, said locking means including crosswiseextending slats each formed with a tongue at one end and a slot at theother, the said slot bein formed between two spaced members, the innerone of which is of dovetail form in cross-section and is oil-set fromthe inner side of the slat and is adapted to lit a correspondin slot inthe edge of the panel, bonding wires passed through the opposed panelsand spacing members supported by the bonding wires, said spacing membershaving hook-shaped anges along one edge adapted-to hook over the bondingwires, and said slats having olf-set cleats" on their outer sides towhich the wires are secured. et. A mold for partition structuresconsisting of a series of panel members adapted 'screws passin tobe'assembled together to inclose a mold space, each of said panelmembershavin .crosswise extending slats, each s lat forme with a tongueat one end and a slot at the other, the slotted portion of theslatpbeing formed by a pair ofrlanges, with one of the flanges bentinwardly and having a vertical portion with dovetailed edges to t a`corresponding dovetailed slot in the edge of the panel, and said slotlying approximately in the plane of said slat.

5. A mold for partition structures comprising side panels and endpanels, means for locking the parts together,'and clamping means on theend panels adapted to engage the ceiling, said clamping means includinghorizontally extending arms and adjusting through said arms and engagingthe cei ing at a plurality of points.

6. A mold for partition structures comprising side panels and end panelmembers, v

means for locking the parts together, and the end panels having clampingmeans to engage the ceiling, sa1d clamping members comprising crossedarms on eachend panel,

and said arms having adjusting screws offset from their supporting panelmember.

In testimony whereof I have hereunto set my hand in the presence of two`subscribing wltnesses.

. DONALD MOWAT.

Witnesses

